Adam Morris

Support for decay descriptors

10

As part of the [LHCb Ntuple Wizard project](https://lhcb-dpa.web.cern.ch/lhcb-dpa/wp6/ntupling-wizard.html), we have implemented decay descriptor parsing (and rendering) using [pyparsing](https://pypi.org/project/pyparsing/). I would like to port this over to `decaylanguage` and make it...